Fuel economizer



July 7, 192.5.

H. A. KOENIG FUEL ECONOMIZER Filed Jan. 8, 1921 Ail /NvE/vraf? Arron/ver Patented July 7, 1925.

UNITED STATES HARRY A. KOENICT, OF PHILADELPHIA, PENNSYLVANIA.

FUEL ECONOMIZER.

Application filed January 8, 1921. Serial No` 435,841.

To all whom t 17mg/ concern:

Be it known that I, HARRY A. KonNiG, a citizen of the United States, and a resident of the city of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Fuel Economizersl` of which the following is a specification.

Some of the objects of the present invention are to provide a means for effecting a more complete combustion in stoves, boilers, furnaces, or any other heaters; to provide a device arranged to operate in conjunction with a combustion chamber to retard and ignite waste gases from the fire; to provide an air supply device for a combustion chamber whereby a relatively cool body of air is distributed above the fire bed; to provide an air supply means for a combustion chamber whereby the quantity. of air can be proportioned in accordance with conditions within the combustion chamber; to provide an air supply means for a combustion chamber whereby entering air. is evenly distributed by a plurality of jets; and to provide other improvements as will hereinafter appear. Y v

In the accompanying drawings, Fig. 1 represents a horizontal section on line 1 1 of Fig. 2 of a furnace showing one form of the present invention in operative position within the combustion chamber; Fig. 2 represents a vertical section on line 2-2 of Fig 1; Fig. 3 represents a longitudinal section of the fuel eonomizer body; and Fig. 4 represents a section on line 11.- t of Fig. 8.

Referring to the drawings, one form of the present invention comprises a body 10 arranged to be rigidly fastened to a furnace or heater door 11 in a manner to project within the combustion chamber 12 in relatively close proximity to the bed of coal or other combustible.

For securing the body 1() to the door 11 i for axial adjustment, so that the body 10 can be properly located with respect to the center of the combustion chamber 12, the body 10 is provided with a threaded stem 18 arranged to pass freely through an opening 14 formed in the door 11. This stem 13 carries a pair of washers 15 and a pair. of nuts 16, one washer 15 and one nut 16 being at one side of the door 11 and the other washer 15 and nut 16 being at the opposite side of the door 11, washers 15 in each instance being between the respective nuts 16 and the door 11. Thus, with the proper projection of the body 10 having been determined, the nuts 16 are fed towards each other to rigidly clamp the washers 15 against the door 11. The opening 14- in the door 11 is preferably located toward the bustion chamber, the bodyilO has a longi-` tudinally disposed channel 20 which extends through the stem 13 and has communication with the outside air by way of radial ports 21 formed in a cap 22 which has threaded engagement with the end of the stem 13. This cap 22 may be fed relative to the stem 18 so that the end of the latter acts as a valve to adj ust the size of the ports 21 to regu late the amount of air passing to the combustion chamber by way of the body 10. A relatively small port 23 traverses the end wall of the cap 22 to insure some air always entering the body 10, in case the ports 21 should become entirely closed through inadvertence or otherwise. A wing set screw 21- or otherl fastening device serves to fit the cap 22 in adjusted position upon the stem 13.

In order to distribute the air entering the combustion chamber, the body 10 terminates at its inner end in a head 25 forming an internal chamber 26 which receives the air from the channel 20. This head 25, while preferably flat on two opposite side faces7 has a curved inner face 27 which forms a laterally extending nose 28, the opposite side of which gradually tapers toward the body portion and merges into the wall of the body 10, thereby providing for the gradual expansion of the air entering the chamber 26.

The inner face 27 of the distributor head 25 is provided with outlets 30, preferably all in the same horizontal plane and so spaced as to divide the dieharged air into a plurality of jets which spread the air over the central portion of the combustion chamber. This distribution of the air takes place evenly over the rising gases by the provision of a baffle 31 within the chamber 26 and eX- tending transversely of the pathv of the entering air. Also it terminates at each end a relatively short distance from the Wall of the heads 25 so that two portions of the entering air pass arOundthe baffle :31 While the remaining portion is deflected over the battle to the row of end openings. The 'are 'angement of the baffle 3l is-such vas tof-s0` proportion the body of entering air that each et delivers the same quantity of air.

v The construction of the present invention diers from those heretofore employed in that the temperature of the entering` air is maintained relatively low, due in part to the expansion Witliintlie chamber 26and in part to the `tact that only a small portion of the body 10 is exposed to the hea-tot the lire. As a result the air delivered is relatively cool and therefore follows a downward path Within the combustion chamber, acting in a measure as aV blanket Whichretardsthe rising gases. These gases which otherwise would escape to the Hue, are ignited .by .the oxygen from the fresh entering air and a more complete combustion takes place. In those devices Where the-entering air is `preheated to a relatively .high temperature, Vthe gases rising Within the combustion chamber are accelerated as they meet the heated air and any increased coinbustion'takes place in the flue or the passages adjacent thereto intead of at apoint in the chamber Where the heat units are available for heating purposes. Y

In the present invention the flue `damper can be adjusted to nearly a closed position to further retard the gases and with the` air stantially all the gases are consumed and all )available units-utilized.

Although only a single form is shown in which` this invention may be embodied, it is tobeainderstood,that the invention is not limited to any specific construction, but might be applied in various -orms without departiaugifrom .thespirit of the invention or. the scope of the appended claim.

Having thusdescribed Amy invention,l I claim:

In a fueleconomizer, a body arranged to project. Within thel combustion chamber of the heater, said body comprising an enlongatedl portion formingan inletconduit and ahead Yattached tosaid portion extending laterally to .one sidejonly with respect there- .to'land forming a chamber converging toard .the outer end vof said head, said head Vdiaving arconvex discharge face provided With a plurality of outlets, ya vertically disposed baHe extending .in close proximity to said discharge face: andfspaced from one sident saidhead, saidibatlie being in the path of theenteringair, a pipe connected to said body portionand communicating with the eonduitfitherein, mea-ns for connecting .said pipe to cthe door of Saidheater, and controlling means for ladmitting air to said pipe.

Signedat Philadelphia, in the county of Philadelphia State of Pennsylvania, this 28th day of December, 1920.

`HARRY, A.vr KOENIG. 

